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AD-FMCOMMS1-EBZ VGA Programming

Question asked by bdmagnuson on Dec 13, 2012
Latest reply on Dec 14, 2012 by bdmagnuson

What is the format of the I2C command for accessing the VGA?  I can write (and read where possible) all of the other components on the board but I can't seem to get any change in output from the VGA.  That is that the range of codes from the ADC never changes whatever I write.

 

Since the VGA isn't really a register oriented device, taking only two 6b serial sequences concatenated together to program it perhaps there's something non-obvious about it.  The demo application doesn't seem to touch it so there isn't anything for me to crib off of.

 

Thanks,

Brian

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